Andy Levitre, OG, Buffalo Bills

Andy Levitre, the Buffalo Bills starting left guard, is one of the most effective pullers. He allowed just one sack last season and was rated by ProFootballFocus.com as the NFL's ninth best guard.

Andy Levitre, the Buffalo Bills starting left guard, is one of the most effective pullers. He allowed just one sack last season and was rated by ProFootballFocus.com as the NFL's ninth best guard. (Kevin Hoffman-US PRESSWIRE / US PRESSWIRE)

Andy Levitre, the Buffalo Bills starting left guard, is one of the most effective pullers. He allowed just one sack last season and was rated by ProFootballFocus.com as the NFL's ninth best guard.